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Outside unit is not coming on

Only the fan is blowing, the air conditioner is not coming on at all

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Hello,
Several things can cause this to happen. The most common is low refrigerant due to a leak. If the inside fan comes on with the outside fan, then the thermostat is probably OK. There's not a lot that you can check without freon gauges, an electrical test meter and a freon leak detector. The compressor is interlocked by the circuit board with a low refrigerant switch and a thermal compressor switch. Again, it is difficult to diagnose this until low refrigerant is ruled out. Take heart, if it is a leak, they can usually be found and repaired for not too much.
Best regards, --W/D--

Posted on Jul 25, 2009

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